Help debugging / correcting wireless speed issue

[CS_DBA]

On 03/17/2014 04:19 PM, Ed Greshko wrote:
> On 03/18/14 05:37, CS_DBA wrote:
>> Hi all;
>>
>> I'm getting wildly inconsistent results... when I first connected to the wireless at a client site today I got speeds up to 25Mbps!
>>
>> Later the wireless disconnected and then cycled through asking me for the password over and over and never connecting... since then the few times I did get connected I could not even go to a web page, it tried for awhile then disconnected again
>>
>> Any help debugging this would be appreciated.  In the meantime, does Fedora play well with USB wireless cards/devices? would it be worthwhile to grab a USB wireless card while I try and work through this?
> I've not run into the situation you're describing....
>
> It may be helpful to learn what hardware is involved.  For your laptop, you can do lspci, assuming the wifi is on the PCI bus, or lsusb if it on the USB bus.  Also you can do "ifconfig" and look for the number associated with "ether" and look that up on http://www.macvendorlookup.com/ .
>
> To find out the hardware of the AP you would do iwconfig and use the Access Point: information.
>
> As for USB dongles, the ones that have been on the market for a while are normally supported.  There probably is a site which lists tested models...you can google that.
>
> Mine is....
>
> Bus 001 Device 004: ID 0411:015d BUFFALO INC. (formerly MelCo., Inc.) WLI-UC-GN Wireless LAN Adapter [Ralink RT3070]
>
> and works fine.
>


$ lspci
00:00.0 Host bridge: Intel Corporation Xeon E3-1200 v3/4th Gen Core 
Processor DRAM Controller (rev 06)
00:01.0 PCI bridge: Intel Corporation Xeon E3-1200 v3/4th Gen Core 
Processor PCI Express x16 Controller (rev 06)
00:02.0 VGA compatible controller: Intel Corporation 4th Gen Core 
Processor Integrated Graphics Controller (rev 06)
00:03.0 Audio device: Intel Corporation Xeon E3-1200 v3/4th Gen Core 
Processor HD Audio Controller (rev 06)
00:14.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset 
Family USB xHCI (rev 04)
00:16.0 Communication controller: Intel Corporation 8 Series/C220 Series 
Chipset Family MEI Controller #1 (rev 04)
00:19.0 Ethernet controller: Intel Corporation Ethernet Connection 
I217-LM (rev 04)
00:1a.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset 
Family USB EHCI #2 (rev 04)
00:1b.0 Audio device: Intel Corporation 8 Series/C220 Series Chipset 
High Definition Audio Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset 
Family PCI Express Root Port #1 (rev d4)
00:1c.1 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset 
Family PCI Express Root Port #2 (rev d4)
00:1c.2 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset 
Family PCI Express Root Port #3 (rev d4)
00:1c.4 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset 
Family PCI Express Root Port #5 (rev d4)
00:1d.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset 
Family USB EHCI #1 (rev 04)
00:1f.0 ISA bridge: Intel Corporation QM87 Express LPC Controller (rev 04)
00:1f.2 SATA controller: Intel Corporation 8 Series/C220 Series Chipset 
Family 6-port SATA Controller 1 [AHCI mode] (rev 04)
00:1f.3 SMBus: Intel Corporation 8 Series/C220 Series Chipset Family 
SMBus Controller (rev 04)
01:00.0 VGA compatible controller: NVIDIA Corporation GK107GLM [Quadro 
K1100M] (rev a1)
02:00.0 SD Host controller: O2 Micro, Inc. SD/MMC Card Reader Controller 
(rev 01)
03:00.0 Network controller: Intel Corporation Wireless 7260 (rev 83)